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Effects of multiple trace alloying elements on the microstructure and properties of Cu-4 wt% Ti alloys

机译：多种微量合金元素对Cu-4 wt％Ti合金组织和性能的影响

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摘要

Effects of multiple trace alloying element Fe and Cr addition on the solid solution-treated Cu-4 wt% Ti alloys were studied with respect to microstructure and mechanical properties. It was elucidated that the addition of trace alloying elements results in the formation of intermetallic phase CuTi, lowering the titanium content of Cu solid solution phase, and refining the microstructure. The contributions of different strengthening mechanisms were calculated, which are in good agreement on experimental results. It turns out that the solute solution strengthening in Cu- Ti alloys plays a crucial role, even though the fine grain size and precipitation strengthening mechanism are contributed to the strength of Cu-Ti-Cr -Fe alloys. Therefore, the Cu-Ti-Cr-Fe alloys exhibits lower strength and higher elongation compared with Cu-4 wt% Ti alloys. However, Cu-Ti-Cr-Fe alloys show a great potential to balance the mechanical properties and electrical conductivity during aging treatment as the titanium content decreases in the Cu matrix, and the strength is higher than that of others in previous study.
机译：从微观结构和力学性能的角度研究了添加多种痕量合金元素Fe和Cr对固溶处理的Cu-4 wt％Ti合金的影响。阐明了微量合金元素的添加导致金属间相CuTi的形成，降低了Cu固溶体相的钛含量，并细化了显微组织。计算了不同强化机制的贡献，与实验结果非常吻合。结果表明，即使细小的晶粒尺寸和析出强化机制对Cu-Ti-Cr-Fe合金的强度有贡献，Cu-Ti合金中的固溶体强化也起着至关重要的作用。因此，与Cu-4wt％的Ti合金相比，Cu-Ti-Cr-Fe合金表现出较低的强度和较高的伸长率。然而，随着Cu基体中钛含量的降低，Cu-Ti-Cr-Fe合金在时效处理过程中具有巨大的平衡机械性能和导电性的潜力，并且其强度高于以往的研究。

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  • 来源
    《Materials Science and Engineering》 |2017年第7期|392-398|共7页
  • 作者

    Huan Wei; Yanchao Cui; Huiqi Cui; Yinghui Wei; Lifeng Hou;

  • 作者单位

    College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China;

    College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China;

    College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China;

    College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China,Shanxi Institute of Technology, Yangquan 045000, Shanxi, China;

    College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Alloy design; As-cast microstructures; Copper alloy; Mechanical properties;

    机译：合金设计;铸态微观结构;铜合金;机械性能;

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